u/OkAttempt3121

I was rereading Sensor and remembered there was a sign with a similar message in the Tomie story 'Water Basin'. Now I've only read Tomie, Smashed, and Sensor, so my question: is it like a thing in Japan to have signs like these planted in places where people go to off themselves, or is this like a cool little nod from Ito?

Youtube: https://www.youtube.com/watch?v=M5l8x-o-hqY